.introduction {
    display: inline-block;
    width: 80%;
    height: 100%;
    display: flex;
    /* border: 1px solid black; */
    margin: auto;
}

.self-left {
    width: 20%;
    height: 432px;
    margin-top: 2%;
    /* border: 1px solid black; */
}

.self-right {
    width: 80%;
    /* height: 510px; */
    overflow: auto;
    margin-top: 2%;
    box-shadow: 5px 5px 10px 5px #ccc;
    border-radius: 5px;
    background-color: #edeef0;
}

.avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
}


/* 
.myphoto {
    width: 100px;
    height: 100px;
    margin-left: 30%;
    border: 1px solid black;
}

.myphoto img {
    margin: auto;
    line-height: 100px;
    margin-top: 25%;
    width: 50px;
    height: 50px;
    border-radius: 50%;
} */

.myname {
    width: 120px;
    height: 40px;
    margin: auto;
    margin-top: 20px;
}


/* 

.mydata {
    width: 80%;
    height: 250px;
    margin: auto;
    margin-top: 10px;
    border-radius: 5px;
    border: 1px solid black;
}

.mymark {
    display: flex;
    display: block;
    width: 80%;
    height: 150px;
    border-radius: 5px;
    margin: auto;
    border: 1px solid black;
}

.mymark p {
    margin-top: 20px;
}

.mydatas {
    margin-top: 20px;
}

.self-right {
    float: left;
    width: 80%;
    height: 432px;
    margin-top: 2%;
    line-height: 432px;
    border: 1px solid black;
}

.mymessage {
    width: 80%;
    height: 432px;
    margin-top: 2%;
}

.person_information {
    position: relative;
    width: 80%;
    height: 50px;
    border: 1px solid black;
    border-radius: 5px;
}  */